Device for determining the frequency of the shots in woven fabrics.



H. OBERHOLZER.

DEVICE FOR DETERMINING THE FREQUENCY OF THE SHOTS IN WOVEN FABRICS. APPLIUATION FILED JUNE 1, 1914.

1,1 1 2,026. Patented Sept. 29, 1914.

THE NORRIS PETERS (20.. PHOTO-LITHOH WASHINGTON. n C.

. mittently advance the two said wheels.

UNI D STATES "PATENT o EIoE.

HEINRICH oBEnIIoLzEE, 0E vIAIInIsoH soIIoNB ne, AUsTI A-IIU GA DEVICE FOR DETERMINING THE EItEeUENcY or rn nsirorrs IN wovEN FABRICS.

Applicationfiled June 1, 1914. Serial No. 842,123. I I

To all whom it may concern:

2121:, director, citizen ofSwitzerland, residing at Mahrisch- Improvements in Devices for Determining the Frequency of the Shots in Woven Fabrics, of which tion.

This invention proposes an improved attachment for looms for the purpose of determining the frequency of the shots in woven fabrlcs, such attachment comprising special devices for operatmg the counter warp threads, so as to bind said threads irregularly after a given number of shots and thus produce a mark. The distance between two successive marks may then be ascertained by means of a rule, which allows of reading the unit (centimeter, inch or the like).

In the accompanying drawing a constructional form ofthe present invention is exemplified.

In this drawing Figure 1 is a side view, Fig. 2 is a front view, Fig. 3 is a horizontal section on the line A-B in Fig. 1, Fig. 4 is a plan view of the rule.

On the shafts o, d areloos'ely fitted beside each other two worm wheelsd-{bjofwhich the wheel a has one tooth less thanthe wheel I). In the constructional form shown in the drawing the wheel a has 19 teeth, while the wheel 6 has 20 teeth. ,With both wheels meshes a specially designed worm e, which, for example, may be fitted on the shaft n of the eccentric, and which operates to inter- To the wheels are secured disks f and 9 respectively. The disk bolted to wheel a has one notch h, the disk bolted to wheel two notches 2'. respectively, which are revolubly fitted on pins 0, p respectively in a frame 7:, one arm of which is extended and fitted on a pivot 72* Schonberg, Austria-Hum. gary, have Invented certain new and useful the following is a specificanumber of shots per linear On these disks ride rollers m, n

i thefloomis at the380tieth. shot at a Be it known that I, HEINRICH OBERHOIH distance of c (Fig. 4;). For ascertaining the number of shots per-unit, for instance one inch, a rule t provided witha division mark is employed, whichmark is found from the formula i eso aa Specification of Letters Yatentl Patented'Sept. 29, 1914. i

inrwhicho is the distance in inches, w the number of shots per inch. The rule is thus divided on the of -2 1) being given in whole figures (for facilitating therecording from150 downward) on the scale. On the rule, furthermore, a mark M is provided, which is applied to a given intersecting point of the line of counters. intersecting point the number of shots per inchma'y then be read on the rule. f In the constructional form shown'the' number of shots m in the distance 4) is 139. NVhen the At the next number of shots is very large, say above 150,

the space between three points is measured and the result is read on the outer scale, which is found from the formula The use of worm allows of counting backward while-the loomis being turned backward, in searching for shots, whereas with the apparatus hitherto disclosed this was only possible at each lth or 8th shot,fls0 that whenthe loom is ther, there will be a mistake and the result cannot bexcorrect. v ,Iclaimz A device for determining the frequency of the shots in woven fabrics, consisting of two independently revoluble worm wheels, the number ofteeth on said worm wheels differ worm wheel, and means cooperating with said notched disks so as to rock the lever.

controlling the counter warp threads when the notches-in said disks register.

In testimony whereof I have aifixed my signature in presence of two witnesses.

Copies of this patent may be obtained for Washington, D. 0."

turned back any furmg by one, a notch disk attached to each five cents each, by addressing the 0omm issioner of Patents, i i 

